[中學] 1+(1+2)+(1+2+3)+...+(1+2+3+...+n) n為正整數
我題目算到這邊就卡住了.......
請問這個可以化簡嗎???? 拜託救救我
--
→
04/29 14:56,
04/29 14:56
推
04/29 14:57,
04/29 14:57
推
04/29 14:58,
04/29 14:58
推
04/29 15:05,
04/29 15:05
推
04/29 15:14,
04/29 15:14
推
04/29 15:15,
04/29 15:15
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 163.19.58.122
推
05/18 10:30, , 1F
05/18 10:30, 1F
推
05/18 10:30, , 2F
05/18 10:30, 2F
→
05/18 10:39, , 3F
05/18 10:39, 3F